reCaptcha dosen't show up using flutter web with firebase phone auth

i just built a flutter web app using Firebase phone auth, during running the web app and debugging the re-captcha worked normally and i received OTP password via SMS, but when i released version (web) and deployed it on local server, the re-captcha didn't show up and that's why i didn't receive the OTP SMS

so what the problem would be if it's showing up normally during debugging and not showing up with release?